/Engine/Plugins/Experimental/LandscapePatch/Source/LandscapePatch/Public/LandscapeTexturePatch.h
Gets the transform from patch to world. The transform is based off of the component transform, but with rotation changed to align to the landscape, only using the yaw to rotate it relative to the landscape.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=LandscapePatch) virtual FTransform GetPatchToWorldTransform() const